Specifications
Table Of Contents
- Software Configuration Guide
- Contents
- Preface
- Understanding Interface Numbering and Cisco IOS Software Basics
- Understanding Interface Numbering
- Understanding Cisco IOS Software Basics
- Upgrading to a New Cisco IOS Release
- Where to Go Next
- Using the Setup Command Facility
- Before Starting Your Router
- Using the setup Command Facility
- Configuring Global Parameters
- Configuring Interface Parameters
- Completing the Configuration
- Where to Go Next
- Configuring with the Command-Line Interface
- Configuring the Host Name and Password
- Configuring 1-Port and 2-Port Ethernet Interfaces
- Configuring Fast Ethernet Interfaces
- Configuring Asynchronous/Synchronous Serial Network Modules or WAN Interface Cards
- Configuring 16-Port and 32-Port Asynchronous Network Modules
- Configuring ISDN BRI WAN Interface Cards
- Configuring T1 and E1 Interfaces
- Configuring T1 (FT1) WAN Interface Cards
- Configuring ATM Interfaces
- Configuring Inverse Multiplexing for ATM Interfaces
- Configuring Analog Modem Interfaces
- Configuring Wireless Multipoint Interfaces
- Checking the Interface Configuration
- Configuring 1-Port ADSL WAN Interface Card
- Configuring the NM-AIC-64, Contact Closure Network Module
- Configuring the 1-Port HSSI Network Module
- Configuring the Compression Network Module for the Cisco 3600 Series Routers
- Configuring the Digital Modem Network Module for the Cisco 3640 Router
- Prerequisites
- Configuration Tasks
- Configure the E1/T1 Network Module for ISDN PRI
- Configure the ISDN D-Channel Serial Interfaces
- Configure the Loopback Interface
- Configure the LAN Interface
- Create the Group Asynchronous Interface
- Configure the ISDN Dialer Interface
- Configure the Default IP Pool Information
- Configure Modem Lines for Dial-In and Dial-Out
- Configuration Example
- Configuring 1-Port G.SHDSL WAN Interface Card
- Saving Configuration Changes
- Where to Go Next
- Configuring Voice-over-IP
- Voice-over-IP Prerequisites
- Configuring the Voice Interface
- Voice-over-IP Configuration Examples
- Where to Go Next
- Configuration Examples
- Cisco 2600 Series Router Configuration Example
- Cisco 3631 Router Configuration Example
- Cisco 3725 Router Configuration Example
- 1-Port ADSL WAN Interface Card Configuration Examples
- NM-AIC-64, Contact Closure NetworkConfiguration Examples
- Cisco 3640 Central Site Configuration to Support ISDN and Modem Calls
- Formatting the Compact Flash Memory Cards
- Using the ROM Monitor
- Index

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Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
Chapter 3 Configuring with the Command-Line Interface
Configuring the Digital Modem Network Module for the Cisco 3640 Router
Configure Channelized T1 ISDN PRI
To configure ISDN PRI on a channelized T1 controller, perform the following tasks, beginning in global
configuration mode:
Note The values used in this procedure for the framing and linecode commands are examples only. Use
the framing type and line encoding specified by your E1 service provider.
For more information about configuring ISDN PRI on a channelized T1 controller, refer to the
“Configure ISDN PRI” section of the Cisco IOS Release 11.3 Dial Solutions Configuration Guide.
Note Any router configured for ISDN support must be connected to the same switch type on all of its ISDN
interfaces.
Configure the ISDN D-Channel Serial Interfaces
When you configure ISDN PRI on the channelized E1 or channelized T1 controller, you create a
corresponding D-channel serial interface used to carry signaling messages for that PRI group. For E1
serial interfaces, slot/port 0:15 is the D-channel. For T1 modules, serial interface 0:23 is the D-channel.
You must configure this signaling interface to receive incoming and modem calls.
As mentioned, the PRI Network Module for the Cisco 3600 series can have either one or two ports.
Because of this, you might have multiple D-channels to configure.
Command Description
isdn switch-type switch type
Select a service provider switch type that
accommodates PRI. Table 3-12 shows a list of
supported switch types.
controller t1 slot/unit
Specify a controller type and define its location in
the Cisco 3640.
clock source line
Specify the clock source for the selected module.
framing esf
Define the framing characteristics as extended
superframe format (ESF).
linecode b8zs
Define the line code as binary 8 zero substitution
(B8ZS)
pri-group [timeslots range]
Configure ISDN PRI. This command specifies the
time slots on the T1 line to be allocated to PRI
service.